Improvement in pumps



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Letters Patent No. 94,027,11ated August 24, 1869.

IMPnovnMnN'r PUMPS.

The Schedule referred to in these Letters Patent and vmaking part of the same.

To all whom it may concern:-

Be itknown that I, CHARLES PowELL,.of Birmingham, England, have invented a new and useful Improvement in Pumps; 'and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in theh art to make and use the same, reference being had to the accompanying drawings, forming a part of this specication.

This invention relates tocertain new and useful improvements in pumps.

The invention consists in a novel construction and arrangement of parts hereinafter described, to`wit, the

form ofthe upper part-of the pump-barrel, the application of air-chambers, and a self-acting tap or leak,

Figure l represents a wooden pump-stock, A, with.

a portion thereof cut away so as to leave it nearly in the form of a chair.-

Ou the seat of said chainstock is placed an air-V chamber, B, whose edges, b, fit into corresponding recesses on the stock.

The bore of the pump-stock terminates atthe top in the inverted frustum of a cone.

The air-chamber is provided with a central tube, c, which extends down within a bore, a, and terminates a short distance above the eduction-pipe 0,-said tube c being braced by cross-pieces' d'.

The air-chamber B is secured to the chair-shaped b'ack,`l), of the pump, by means of screws passing through ears or lugs 6,011 the air-chamber, into the back.

The upper part of the pump is reduced to about one-third of its thickness, by removing two-thirds,

r giving to the part of the pump above the platform of the well something of thei shape of a chair.

The poltion'of the air-chamber above the bore may be made of various forms; it may be swelled out, or made smaller in diameter, perfectly cylindrical, or- Qfl'at vat one or more sides, so that such side or sides` 'will be in line-with the ears or lugs e.

The top of the air-chamber is provided with a stuffing-box, E, through which the piston-rod F passes.

.The gland of this stufing-box may be tightened by screwbolts, or it maybe provided with a screw-thread to work in a female thread in the interior of the upper part of tube c.-

The piston-rod passest-hrough the tube c, and the portion of said rod which works in c, may be of steel, to obtain lightness with arequisite degree of strength.

G is an air-chamber, connected to the eductionpipe C. 1

' This air-chamber is of cylindrical, balloon, or-other suitable shape, and it may be cast in one piece with C, or. cast separately, and attached to itin an'y proper way.

f In cases where the airchamber G alone is used, 1- place a stuffing-box, of any proper kind, in thel top of the bore a of the pump-barrel.

The pipe O is screwed in or on to the barrel A, and itis provided with a flange, d, to abut against A. (See fig. 2.) 'l

J represents a curved or bent tube, which is screwed into the barrel A ofthe pump under the platform of the well, and at asufticiently low point to be beyond the action of the frost.

In a force-pump, the horizontal part of this tube is 'supplied with 'a ball or other valve, J 4", (see fig. 2;).

said valve closing the orice when the force is applied, and opening of itself when the pump is not in' opera.- tion; the ball-valve being of sufcient weight to yield.

'only to astrong' pressure from thepump'fcylinder.

The outlet of the tube J ,is provided with a stopper, j, attached to a rod, K, which extends upward through the platform of the well, the stopper having a tendency to .close the outlet of tube J, by virtue of its own weight, or with the aid of a spring, or other means. The rod K is also provided with a,lid, L', which is directly over the mouth of a vessel, L, containing water, or other substance ,"capable of freezing, and which, in freezing, will raise the lid 7c and'rod K, and thereby lift the stopper j, and admitl of the Water within the pump escaping before it has time to freeze.

The vessel L may be made of -various shapes, but

an inverted frustum of a cone would probably be as desirable a form as any.

The vesseLL communicates with the-interihr of the pump by a horizontally-projecting tube, l, containing a ball or other valve, m, when the device is applied to a force-pump.

I claim as new, and desire'to secure by Letters Paile-lltl. The combination of the tube J, rod K, having stopper j, and lid k, thereon, tube l, and hollow stock A, all Abeing connected and constructed as set forth, to -cause the escape of water within the pump before it canfreeze, inthe manner described.

2. The combination ofthe chair-shaped Wooden stock, A, with air-chamber B and piston E, as and forv the purpose specified.

3. The improved pump, the same consisting of the devices named and described.

CHARLES POWELL.

Witnesses: 1 f

' C. W. GRossMITH,

A. GHRIsTm. 

